OHLP MONT BELVIEU NGL FRACTIONATION PLANT
NPDES ID: TX0140091
D — SNC: Discharge monitoring report not received
The facility didn't submit its required discharge monitoring report.
Violations
February 28, 2026
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5 mg/L against a permitted limit of 18 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 6.35599995 kg/d against a permitted limit of 85.80599928 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 6 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 7 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.99759998 kg/d against a permitted limit of 32.18859973 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.36199999 kg/d against a permitted limit of 60.83599949 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 3 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.99879999 kg/d against a permitted limit of 40.67839966 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4.53999996 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2.26999998 kg/d against a permitted limit of 48.1239996 kg/d (DAILY MX)
DMR, Limited - Overdue
January 31, 2026
BOD, 5-day, 20 deg. C
0% over limit
Discharged 6.63 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.52517995 kg/d against a permitted limit of 85.80599928 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 3.17799997 kg/d against a permitted limit of 48.1239996 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.18 MGD against a permitted limit of 2.07 MGD (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 6.47 mg/L against a permitted limit of 18 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.106 MGD against a permitted limit of 0.425 MGD (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.117 MGD against a permitted limit of 0.537 MGD (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.36199999 kg/d against a permitted limit of 60.83599949 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2.72399998 kg/d against a permitted limit of 32.18859973 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 6 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.198 MGD against a permitted limit of 1.139 MGD (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 3.91347997 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.08959999 kg/d against a permitted limit of 40.67839966 kg/d (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2 mg/L against a permitted limit of 20 mg/L (DAILY AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 8 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Overdue
November 30, 2025
Oxygen, dissolved [DO]
25% over limit
Discharged 4.5 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
April 30, 2025
Oxygen, dissolved [DO]
53% over limit
Discharged 2.8 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
March 31, 2025
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.178 MGD against a permitted limit of 0.755 MGD (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.750884 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 5.90199995 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.292 MGD against a permitted limit of 1.968 MGD (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 6.03819995 kg/d against a permitted limit of 85.80599928 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.393501 MGD against a permitted limit of 0 MGD (DAILY AV)
DMR, Monitor Only - Overdue
February 28, 2025
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.348 MGD against a permitted limit of 1.968 MGD (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 1.08959999 kg/d against a permitted limit of 85.80599928 kg/d (DAILY MX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
8% over limit
Discharged 5.5 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.304386 MGD against a permitted limit of 0 MGD (DAILY AV)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.109 MGD against a permitted limit of 0.755 MGD (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.174371 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0.5448 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Overdue
January 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 4.85779996 kg/d against a permitted limit of 85.80599928 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 2.63319998 kg/d against a permitted limit of 51.30199957 kg/d (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.34469 MGD against a permitted limit of 0 MGD (DAILY AV)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 1.354585 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.149 MGD against a permitted limit of 0.755 MGD (DAILY AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.324 MGD against a permitted limit of 1.968 MGD (DAILY MX)
DMR, Limited - Overdue
November 30, 2024
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
2% over limit
Discharged 5.9 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
12% over limit
Discharged 5.3 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
15% over limit
Discharged 5.1 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
October 31, 2024
Oxygen, dissolved [DO]
18% over limit
Discharged 4.9 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
17% over limit
Discharged 5 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 6.08 SU against a permitted limit of 6.5 SU (MINIMUM)
DMR, Limited - Numeric Violation
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0.301 MGD against a permitted limit of 0.3 MGD (DAILY AV)
DMR, Limited - Numeric Violation
Oxygen, dissolved [DO]
53% over limit
Discharged 2.8 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Numeric Violation
September 30, 2024
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Overdue
August 31, 2024
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Overdue
July 31, 2024
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 6 mg/L (MO MIN)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)